diff --git a/bucket/z3.json b/bucket/z3.json
index d984ca7906..35f58887f1 100644
--- a/bucket/z3.json
+++ b/bucket/z3.json
@@ -1,18 +1,18 @@
 {
-    "version": "4.12.6",
+    "version": "4.13.0",
     "description": "Theorem prover from Microsoft Research.",
     "homepage": "https://github.com/Z3Prover/z3",
     "license": "MIT",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/Z3Prover/z3/releases/download/z3-4.12.6/z3-4.12.6-x64-win.zip",
-            "hash": "cf75f3991a405e908129635a47e672f6e7e8d3aa05c1f99cbfe3d5b50b2e123a",
-            "extract_dir": "z3-4.12.6-x64-win"
+            "url": "https://github.com/Z3Prover/z3/releases/download/z3-4.13.0/z3-4.13.0-x64-win.zip",
+            "hash": "2bcd14b6849fddead3d0b3cb671cc9d134a8ef0b1d3eff3efd7d75a5bbf00dd3",
+            "extract_dir": "z3-4.13.0-x64-win"
         },
         "32bit": {
-            "url": "https://github.com/Z3Prover/z3/releases/download/z3-4.12.6/z3-4.12.6-x86-win.zip",
-            "hash": "cd2ef6204c4af6926b7d2f03218c58932a215da896b115b78d23916a80d0da3c",
-            "extract_dir": "z3-4.12.6-x64-win"
+            "url": "https://github.com/Z3Prover/z3/releases/download/z3-4.13.0/z3-4.13.0-x86-win.zip",
+            "hash": "2a973961389636883f482293367ceeba2e4c529e9d4b1bd7c5bdac10506d3a87",
+            "extract_dir": "z3-4.13.0-x64-win"
         }
     },
     "bin": "bin\\z3.exe",